Psychonomic Science

, Volume 6, Issue 1, pp 1–2 | Cite as

A comparison of two discrimination-reversal indices intended for use with diverse groups of organisms

  • Duane M. Rumbaugh
  • Malcolm A. Jeeves
Animal Behavior Discrimination


Two discrimination-reversal indices, independently conceived by the authors, are compared and contrasted. The indices avoid many of the complications involved in the method of directly comparing absolute performance levels of diverse species. Each index provides a ratio score which relates reversal performance to acquisition performance on visual discrimination tasks.


Acquisition Trial Percentage Response South AUSTRALIA Ratio Score Reversal Performance 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Psychonomic Press 1966

Authors and Affiliations

  • Duane M. Rumbaugh
    • 1
  • Malcolm A. Jeeves
    • 2
  1. 1.San Diego State College and Institute for Comparative BiologySan DiegoUSA
  2. 2.University of AdelaideAdelaideAustralia

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